Rising up from uncharted swamp, the Marro Hive appears to be a unique feature of the terrain. It isn’t until champions come very close to the living walls of the Hive that they hear it gurgle with life and see its walls erupt with hatching Marro, fully mature and ready to do battle. From a distance, the Hive appears like an odd arrangement of dinosauric bones, green pulsing muscle tissue, and strange bubbling masses of fleshy eggs. But battle erupting around the Hive reveals that this creature is far from a passive nest: It thinks and attacks with a will of its own.